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Twelve years ago, Zapp’s founding members died in an apparent murder-suicide when Larry Troutman allegedly shot his younger brother Roger Troutman, then shot himself in a car a few blocks away. There were no witnesses and no clear motive, but family members have speculated their deaths were the result of a business deal gone awry. These days, Zapp is anchored by Lester and Terry Troutman, who will bring a version of the once-influential funk act to Fort Dupont Park tonight. It will be fascinating to see how the band has soldiered on without its main innovator. One of the most recognizable aspects of Zapp’s sound was Roger Troutman’s robotic talk box, famously heard in the band’s singles “Computer Love,” “More Bounce to the Ounce,” and “Dance Floor.” If you think T-Pain invented Auto-Tune six years ago, think again: If it weren’t for Zapp, today’s pop singers might have no pitch correction to hide behind.

Zapp performs with Teri S. at 8 p.m. at Fort Dupont Park, Minnesota Avenue and Randle Circle SE. Free.